Convertible sound-box.



R. l. PRETTIE.

CONVERTIBLE SOUND BOX:

APPL'lcATloN FILED MAY 4,-1915.

Patented Feb. 2o, 1917.

RICHARD JAMES PRETTIE. OF JAMAICA NEW YORK. ASSIGNOR TO THE AEOLIAN COMPANY, A. CORPORATION OF CONNECTICUT.

CONVERTIBLE SOUND-BOX.

Specification of Letters Patent. Patented Ii'eb. 20, 1917.

' Application tiled May 4, 1915. Serial No..25.741.

To all whom'z't may concern:

Be it known that I, RICHARD J .urns PRET- TiE, a citizen of the United States, residing at Jamaica, in the county of Queens and State of New new and useful Improvements in a Convert.- ible Sound-Box, of which the following is a specification.

My present invention relates lto a soundbox, especially one adapted to play interchangeably both vertical and lateral wave sound-records. The advantages of my invention will be apparent to those skilled in the art from an understanding of the following description in connection with* the drawings. h

In these. Figure 1 is a'side elevation or face view ot' a sound-box within my invention: F ig. 2 is an enlarged cross-sectional view partly in elevation throughit showing the box playlng a lateral wave record; and

' Fig. 3 is an edge elevational view showing the box adpisted to play a vertical wave record with the hall pointed stylus.

I will now describe the specific devices of the drawings. l is a portion of the shelf of a phonograph. 2 the motor spindle, 3 the turn-table, 4 the tone arm. is the soundbox casing having neck 6 for connection with the tone arm. T is the diaphragm and 8 the stylus bar. Any usual or preferred suspension'may be employed for the stylus bar, that shown comprising pivot pinsf) projecting from the casing into sockets formed in the underside of a cross-piece 10 forming part of the stylus bar. 11 is a screw tapped into the sound-box casing and intermedi' ately extending without contact through a considerably larger hole in" said cross-piece portion 10 of the stylus bar. leaf spring bent in the form of ing a central hole through which the shank of the, screw 11 passes. The bent ends of this spring hear on said cross-piece 10 and force its sockets into contact with the pointsy of the pivot pins 9 with a spring pressure depending on the adjustment of the screw ll` whose head. it will he noted. hears against the middle portion of the spring. The above details as to this suspension are claimed elsewhere and form no important part of my present invention which resides primarily in the following.

14 and 15 are stylus means forming the free end of the stylus bar and arranged respee tively to play lateral and vertical wavesound York, have invented certam K 12 is a flat or v a bow havl. vmeansl turned up.

#dle 14 of the former to engage records. .lflach comprises a Socket or equiva-` lent styhis support and a stylus. The stylus 1l is .in v ordinary or preferred needle for playing lateral records. The other stylus 15 has a hall point or may be any other ordinary or preferred stylus for playing vertical records. In the particular embodiment shown, the stvlus means .lt is an inte-- gral continuation ot the stylus har: whereas the other stylus means 15 comprises '.n part an integral transverse projection l5" from the stylus bar in adirection away from the plane of the diaphragm andfurther comprises a pivotal part 15"'. This pivotal part has a'screw-threaded hole in one end of the part 15". lh'is a collar or nul pinned l10n-rotatably 011 .Said threaded end. 'lhe arrangement is such that when the part 1.3" is turned down from its position in Fig. to that in Fig. 3. it screws into tight locking contact with the part 15". This makes the part 15c rigid with the stylus har so that there is no lost motion during the playing of this stylus. In this Fig. 3 position of the part 15", it will be. noted that itsstylus eittends below the point of the other stylus. The result 'is that the former stylus 15 can play its record without any interference fl'm said other stylus. 0n the other hand to play a record with said other stylus 14, it is onlynecessary to pivotthe part 15 into its up position shown in Fig. Q, whereupon it will screw into lockingr Contact with' the stop '15 to prevent anv rattle or interference with the playing of the stylus 14".

The operation will now be apparent but may be summarized with the other stylus This permits the neethe record without interference from the stylus 15. To play a vertical wave record, it is 'only necessary to swing the part 15c into its down position and engage its stylus 15 with the record, which then holds the other needle 14 out of contact with the record. Thus it will be seen that the sound-box is convertible or changeable to play either class of record by an extremely simple adjustment without changing the angular position of th sound-box or its diaphragm to thel recor Finally it will be noted that .the direction of the screw-thread 15 is suchythat a clock- 14 will be employed.

as follows :#To play a lateral wave sound record, the stylus means Q yf 'wise rotation o1" pivoting of the part 15c rotation in the direction of the arrow in Fig. 1 tends to lmaintain said part 15-'in its locked position instead of tending to unlock it.

lVhat I claim is 1. A sound boxl comprising a diaphragm,v

a stylus bar and two stylus holding means on said bar arranged respectively toplay vertical and lateral wave sound records without 1- substantially changing the angular relation of the diaphragm to the record, the stylus holding meansbeing adjustable `so that either may play without interference from the other.

' 2. A sound box comprising a diaphragm, a stylus bar and two stylusholding means on said bar arranged respectively to play vertif cal and lateral wave-sound records without substantially changing the langular relation of the diaphragm to the record, one stylus holding means beingr longer than the other and being adjustable into and out of playing position.

.-3. A sound box comprising a diaphragm,

l a stylus bar and two stylus holding means on said bar arranged respectively to play vertical land lateral' wave sound Jrecords' without substantially changing theangular relation of the diaphragm to the record, one stylus holding means being pivotable into and out of a playing position wherein the record engaging extremity' of its stylus is .below that of the other stylus holding means.

4. A sound box comprising a diaphragm,

a stylus bar and two stylus holding means on said bar arranged respectively to' play "ertical andlateral vwave sound records -brings it into its locked position shown in Fig. 3, which means that the record by lts the diaphragm to the record,l one' stylus means beipg adjustable intov and out of a playing position wherein its recording. en# gagmg extremity is below that of the vother stylus means, and means for locking said adjustable stylus means in its out of playingv position.

7. A sound box comprising a diaphragm,-

a stylus bar and two stylus means on said bar arranged respectively to play vertical and lateral wave sound records without substantially changing the angular relation of the diaphragm' to 'the record, one stylus means being pivotable into and out of a playing position whereinv its recordin -engaging extremity is below that of the -othei` stylus means. and means for automatically locking said pivotal stylus means in its playing position. y 8. A sound box comprising a diaphragm,

.astyl'usbar andtwg stylus means on said bar arran ed respectively to play vertical and latera wave sound records without substantally changing the angular relation of without substantially changing the angular relation of the diaphragm to the record,one stylus holding means being adjustable into and out of a playing position wherein the .record engaging extremity of its stylusV is below that of the other stylus holding means.

A sound box comprising a diaphragm, a stylus bar and two stylus holding means on said bar arranged respectively to play vertical and lateral'- wave sound .records without substantially changing the angular relation of the diaphragm to the record, one stylus holding means being adjustable into and out of playing position wherein the record engaging extremity of its stylus is below that of the other stylus holding means,

I. .and means for locking said adjustable stylus holding means in its playing position.

6. A sound box comprising a diaphragm,

a stylus bar and two stylus means on said bar arranged respectively to play vertical and lateral wave sound records without subbeing pivotable into and out of a playing po- Y sition wherein it projects below the other stylus means.

10. A sound box comprising two' stylus means arranged respectively to play vertical and lateral wave sound records without substantially changing vthe angular relation of the box to the record, said two stylus means being located side by side `and one of them being pivotable into and out of a playing position wherein it lprojects below'the other stylus means, and means for locking said pivotal stylus means in its playing and out of playing position?" 11. In combination with atraveling sound record, a sound box comprising a. stylus bar with a pivotal stylus' part, and a screw connection and stop between said bar and said part, permitting the latter to be pivotedinto playing position in the direction of travel lof the record and then to come up against the stop..

In testimony whereof, I have signed my ',name. to this specification, this 3rd day of stantially changing the angular relation of May, 1915.

RICHARD JAMES PRETIIIE.I

Copies of this patent may be obtained for ve cents each, by addressing-the Commissioner of Patents.

Washington, m Qt,

ion in Letters Patent No. 1,216,839.

Correct It is hereby certified that in Letters Patent. No. 1,216,839, grunted February 20,

1917, upon vthe application of Richard James. Prettie, of Jamaica, New York, for

an improvemen in Convcrtiblt` SounrlLBoxesfgan error appears in the printed specification rcr'luiri'ng; rorrcrtion as follows: Pge l. line 73, for the referencenumcral 15b, second oor'urro'nce, read 15d; .antl' that the Asmid -Lottcrs Potent should he rend with this correction therein taller.l the saluenmy Conform to the record of the case in the Patent Ollio-e. l

Signed and sealed this 27th (luy of March, A. D., 1917. 

